On the 1881 census lodging in Llanwonno there are two Pothecarys. Besides Frederick there is Charles born circa 1861 lodging on Duffryn Street, also a coal miner.
1871 census RG10 1936 folio 25
Little London Heytesbury Wiltshire
Hannah Pottacary 48 Trowbridge, Wiltshire, Head Widow Laundress
Frederick Pottacary 19 Corton, Wiltshire, Son Ag Lab
Charles Pottacary 10 Heytesbury, Wiltshire, Son
Maria Pottacary 7 Heytesbury, Wiltshire, Daughter
1861 Census RG9 1306 folio 11
Church Yard Heytesbury Wiltshire
Daniel Pottacary 39 Corton, Wiltshire, Head Married Sawyer
Hannah Pottacary 37 Trowbridge, Wiltshire, Wife Married
Samuel Pottacary 14 Corton, Wiltshire, Son Woodman
John Pottacary 12 Corton, Wiltshire, Son Ag lab
Frederick Pottacary 8 Corton, Wiltshire, Son Ag lab
Mary Pottacary 4 Corton, Wiltshire, Daughter
Charles Pottacary 1 Heytesbury, Wiltshire, Son
1851 Census HO107 1843 folio 506
Boyton and Corton Wiltshire
Danial Pothecary 30 Corton, Wiltshire, Head Married Sawyer
Hannah Pothecary 27 Trowbridge, Wiltshire, Wife Married
Danial Pothecary 6 Corton, Wiltshire, Son
Samuel Pothecary 5 Corton, Wiltshire, Son
John Pothecary 2 Corton, Wiltshire, Son
plus one lodger Jane Turner
Regards
Valda